CA2018074A1 - Sliding chair, sliding plate and ribbed plate, respectively, for railway switches of railway crossings - Google Patents
Sliding chair, sliding plate and ribbed plate, respectively, for railway switches of railway crossingsInfo
- Publication number
- CA2018074A1 CA2018074A1 CA002018074A CA2018074A CA2018074A1 CA 2018074 A1 CA2018074 A1 CA 2018074A1 CA 002018074 A CA002018074 A CA 002018074A CA 2018074 A CA2018074 A CA 2018074A CA 2018074 A1 CA2018074 A1 CA 2018074A1
- Authority
- CA
- Canada
- Prior art keywords
- sliding
- plate
- chair
- recess
- members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
- E01B7/06—Constructions with flexible tongues or flexible fishplates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2202/00—Characteristics of moving parts of rail systems, e.g. switches, special frogs, tongues
- E01B2202/04—Nature of the support or bearing
- E01B2202/042—Sliding
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2202/00—Characteristics of moving parts of rail systems, e.g. switches, special frogs, tongues
- E01B2202/04—Nature of the support or bearing
- E01B2202/06—Use of friction-reducing surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
- Slide Switches (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Connection Of Plates (AREA)
- Support Devices For Sliding Doors (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Combinations Of Kitchen Furniture (AREA)
- Chairs Characterized By Structure (AREA)
- Pallets (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Road Paving Structures (AREA)
- Seats For Vehicles (AREA)
Abstract
A b s t r a c t In a sliding chair (2), a sliding plate and a ribbed plate (1), respectively, for railway switches or railway crossings, comprising friction-reducing sliding members (4, 5) of synthetic plastics material being releasably mounted within recesses (3) of the sliding chair (2) and the plates, respectively, there are accommodated within each recess (3) at least two sliding members (4, 5) having there side surfaces engaged over or, respectively, engaged behind over the major part of the circumference of the sliding members (4, 5) by inwardly protruding walls or profiles, respectively, of the edge of the recess, so that there results a safe mounting in position of the sliding members (4, 5) and a simple possibility to interchange the sliding members (Figure 2).
Description
SL~D~NG CHA~R, SLIDING PLATE AND RIBBED PLATE, RESPECTIVELYj ~OR RAILWAY SWITCHES OR RAILWAY
CROSSINGS
BACKGROUND ~F THæ I~VENq'ION
Field o'f''t~'e'I'nv'ention . _ The invention refers to a sliding chair, a sliding plate and ribb~d plate, respectively, for railway switches or railway crossings, comprising friction-reducing sliding membersof synthetic plastics material being releasably mounted within recesses of the sliding chair and the plates, respectively.
Description o~` th'e'P'ri'o'r Art . . ._ . . . _ In railway switches comprising a deflecting device, the tongue rails rest on sliding chairs and are shiftably supported thereon. In switch constructions having the frog itself swivelably mounted, there are known different constructions in which part of the frog is slidingly supported on a plate member or the whole ~ro~ is swivelably restin~ on sliding plates Swivelable constructional parts are also known in connection with railway crossings, noting that there must in all known constructions be provided for a suitable lubri-cation of the sliding support and, respectively, ease of swivelability on the slidinq plates, the sliding chair and the ribbed:plates, respectivel~, in a reliable ~anner. When lubricatin~ the slidin~.su~ports in usual manner, there result hi~h maintal~ance costs, bec~use the sliding suppo~tS must , . ~
. - ;. : ' `' :
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;Z~ IL8~74 be supplied with lubricant in re~ular time intervals.
Lubricating oils addikionally suffer from the drawback of having varyiny lubricating properties under the influence of the weather conditions and that they completely loose there lub~icating properties in c~se o~f increased contami-nation. For this reaSon, there has already been proposed to utilize in place o~ lubricants sliding members of synthetic plastics material and reducin~ friction. From DE-OS 27 05 122 there has, for example, hecome known a rail~ay switch ~or railway vehicles and comprisin~ a deflecting device in which the ton~ue rails rest on sliding chairs, notin~ that friction--reducing sliding membexs of synthetic plastics material are provided between the parts sliding one upon the other. In this known construction, the sliding members of synthetic plastics material we~e pro~ided on the botto~ side of the tongue rails at least within the area of the sliding chairs.
Furthe~more, there h~e become known for slidin~ plates o~
railway switches coatin~s consist~ng of an or~anic material, notirl~ tha~t such s~nthetic plastics ~ate~ial shall have a suf~icient fle~ibilityr a su~lclent impact stren~th and a suf~icient abrasion re~ist~nce e~en at low te~per~tures.
Also such slidin~ membe~s o~ synthetic plastics ~aterial are subjected to ~ although reduced - wear and xe~uire maintainance work in re~ular ti~e lnter~als. Fcr the purpose o~ ~acilit~tin~
the maint~ina~nce work, the~e has already been pro~osed in the EP-~ 232 726 to mount within a frame, which is xe~ayabl~ locked within a Xecess of the sl~dln~ chair~ a ~lu~alit~ o~ slidin~
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elements consistln~ o~ sel~-lubricating material. The self--lubricating material proposed for this construction was graphite-bronze being press~seated within the frame. A
construction utilizing graphite-bronze was - last not least -selected because ob~iously no type of sliding inserts wasfound which ha~e suff'icient stability and - in spite thereof -can rapidly and in a simple manner be replaced without the use of expensive tools or equipment.
SUMM~R~ O~ TH~ ~NVENTION
The invention now aims at providing a sliding chair and, reSpectively, a sliding plate or ribbed plate of the initially mentioned type, which is equipped with ~riction-reducing sliding members o~ synthetic plastics material and which simultaneously allows to reliably mount in position the sliding members thereby pro~iding a simple possibility to replace damaged slidin~ members. For solving this task, the construction according to the in~ention consists, in principle, in that at least two slidin~ ~e~bexs are accommodated in each receSs, the side surfaces of the sliding ~e~bers being - for the major part af the cixcumfexence of the sliding members - engaged over or, respecti~ely, behind by inwardly protruding walls or, respectivelyr profiles o~ the edge of the recess. On account of at least two slidln~ ~embers hein~ accommodated within each receS~ and being engaged o~er or, respectively, en~aged behind at thei~ s~de Sllr~aces over the major part of the circumference of the sliding ~embers by inwardl~ pxotruding walls or, respecti~ely, b~ profiles of the edge o~ the Xecess, .
:. ~
there is provided, on the one hand, a reliable seat of the sliding members on account of the inwardly protruding walls or, respectively, profiles and there is provided, on the other hand,.the ~ossibility to i~ter¢hanqe.the sli~ing members in a sim~le manner.
For this purpose, it is sufficient to lift and extract one of both sliding m~m~ers accommodated within the same recess, whereupon the other sliding member can by lateral shifting movement be equally shifted out of that area in which it is engaged over or engaged behind, respectively, by the inwardly protruding walls or pxofiles. It is thus sufficient to design a small portion of the circumference of the recess such that it does not engage over the side surfaces of the sliding members and thus provides the possibility to extract said both parts via that area in which the side surfaces are not engaged and on account of the side surfaces being engaged over or behind, respectively, by the walls of the recess over the major part of the circumference of the sliding members, a reliable locking effect is obtained in the inserted con-dition without additional measures, in particular without a separate auxiliary framec On accaunt of arranging the sliding members within the sliding chair, the sliding plate or the ribbed plate without interpositioning an auxiliary frame, there is obtained a small constructional height which is of particular ad~anta~e when using~ ~or example, a space-saving inner bracing o~ stock rails.
~ n this case ~nd in a particularly advantageous manner, the arrangement is such tha~ the recesses are o~ elon~ated D'7~
shape and that the separating gap between the sliding members introduced into the recess is arranged in transverse relation to the longer axis of the recess. On account of the recess having elon~ated shape, both sliding members to be driven into the recess can in a simple manner be forced into the recess in direction of its longitudinal axis, so that a great area of the circum~erence is reliably engaged over or, respectively, engaged behind by inwardl~ protruding walls or, respectivel~, profiles of the edge of the recess, noting that only a relatively short area need be designed as an unoccupied area allowing to lift and e~tract both sliding members.
The inoccupied area required for the lifting movement and extracting movement, respectively, can in a si.mple manner be obtained i~ the recess has an area comprising substantially vertical walls and having a width corres~onding`to the maximum width of the sliding members as measured in transverse relation to the direction o~ introducing the sliding membexs.
Sliding membexs havlng a do~e tail croSs section or a trapezoidal c~osS sectian can easily be intxoduced within the area of the essent.~all~ .~ertical walls~ noting that driving the members into the ~ea comprising the inwardl~ protruding walls or, res.pectivel~, pxo~iles c~n be ach~eved by means o~
some ~ew strokes in l~ngitudinal direction o~ the recess.
On account of the elas~ic~ty o~ the ~riction-reducing sliding members consistin~ o~ s~nthetic. plastics material~ the me~bers are, during the dri~ng~in o~eration~ si~ultaneously stron~ly prestressed ln direction to the bottom o~ the recess~ So that ' .
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there is simultaneously obtained a reliable anchoring effect.
On account of both sliding members being forcibily introduced one after the otherl the second ~orcibly introduced sliding membex snaps in the ~inally stage and undex elastic prestress in direction to the bottom of the recess, so that there is reliably obtained a locking action against outward shifting movemen~ or stepping out of the sliding members.
A particularly simple arxangement results i~ the sliding members have a substantially trapezoidal croSs section and if the base angle o~ the legs of the trapeze corresponds to the base angle of the obli~uely extending and upwardly inwardly extending walls of the recess. Base angles of the legs o~ the trapeze, as measured ~rom the bottom of the recess~ have proved as particularly valuable if they are in the magnitude ~S of approximately 60, and such angles make sure that no con-siderable resistance is encountered when forcibly introducing the sliding me~bers and make also sure that the sliding members are reliably fixed in position within the recess.
After ha~ing forcibly introduced both siiding members, there remainS~ o~ course, between bo~h sliding members a separating gap which advantageously extends in transverse relation to the longer axiS o~ the recess ~or ~he purpose of pro~iding a good supporting ~orce against lateral outwa~d shi~tin~ mo.vement. The mutually oppoSing ~ont sur~aces o~
the slidin~ members at the area o~ the Separating gap thus ~or~ a xeliably support and counte~act in a reliable manner any unintended loosening o~ the sliding ~ember~ For reliabl~
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preventing any upward mo~ement o~ the sliding members, the arran~ement is, in this case, preferably such that the separating gap between the sliding members within a recess is arranged within the area of the recess having substantially vertical walls or in proximity o this area. The distance of the separating gap from the unoccupied area as de~ined by the vertical walls must, of course, be selec.ted so small that the axial compression of the ~riction-reducin~ slidin~
members of synthetic plastics m~terial when forcibly introducing same with a corresponding tool, for exa~ple a hammer, is suf~icient to again el~stically expand the slidin~ member forcibly introduced as the second part - after having passed the unoccupiéd position - to such an extent that its ~ront sur~ace extends into an a~ea in which this second sliding 15 . mem.ber is already a~ain en~a~ed o~er by inwardly protrudin~
walls. In this manner~ th.ere iS obtained a particularl~ hi~h degree of sa~ety duxing the loçkin~ operation.
For the ~urpose o~ pxo~idiln~ the possibility to Xemove any contaminations ina~oidable in operation and,thus for the purpose of counter~cting any premature wear of the slidin~
elements~ the ~rxan~ement is a,dva,nta~eous.l~ suçh that the slidin~ members ha~e on .their sur~aice ~roQ.~eS e~tendin~ in lon~itudinal directi~n o~.the xeçesS or including an acute an~le with the longitud~na,l dlrection. B~ ar~anyin~ these ~rooves under a,n ~cute an~le to the lon~itudinal direction o~ the recess there results lateral strippin~ o~ deposited dirt p~rticles, i~ ~n~ ~o th~t.the sliding ~iction-reducing 8~
sur~ace is only little subjected to abrasion even in case of strong contamination. This ad~antaye is obtained in particular i~ the longitudinal axis of the recesses is oriented in shiftlng direction of the shi~table switch part, noting that in these cases - in particular on account of the separat-ing gap extending in essentially transverse relation and in an advantageous manner in essentially orthogonal relation to the longitudinal axi~ o~ the recess - shifting forces, if any, introduced into the slidin~ elements are ef~ectively supported within the area of the supporting gap without having as an ef~ect an upward ~o~ement of the sliding members.
A particularly hi~h de~ree of reduction of the friction and simultaneously a mini~um wear can be obtained if in each sliding chair and, respectively, in each sliding plate or ribbed plate there are pro~ided two recesses which are parallely arranged one relative to the other.
It is in particular ~hen using an inner bracing of stock rails that ~ small constxuctianal height must be intended~
When ~ixiny rails or s~itch parts in posit~on in such a manner, the ralls or sWitch parts are, aS a rule, braced by usin~
cotters ~ia leaf sprin~ elements, noting that the slidin~
chairs comprise correspondin~ xecesses for the cotteXS. If a thicker desi~n of the slidin~ chair plates beco~es necessaxy ~or reli~bl~ positioning the cotters, and this for accommodating the sliding members in the recesses en~a~ing over the sliding membexs, the arrange~ent is, for compensating this increa~ed constructlonal height, advanta~eously selected !
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such that, for the purpose of reducing the constructional height in view of utilizing for positioning rails or switch parts lea~ spxing elements which can be braced by cotters, the ribbed plate or base plate below the sliding chair is stepped down to a smaller plate thickness. As a whole, thus there can be obtained a reduction of the total constructional height in spite o~ the sliding members outwardly protruding for a small amount as compared with known constructions.
BRIEF DESCRI~TION OF THE DRAWING
In the ~ollowing, the invention is explained with reference -to examples of embodiment schematically shown in the drawing, further advantages of the inventive construction becoming more clear by such embodiments.
In the dxawing Figure 1 shows ~ section through a first embodiment of an inventive ribbed plate co~prising a sliding chair having friction-reducing sliding mem~ers;
Figure 2 shows a tap plan view in direction of the axrow ~I~ of Fi~ure ~ onto the embodi~ent according to Figure1, noting that Fi~ure ~ shows a.section along line I-I a~
Figure 2;
~ igure 3 shows in an enlarged scale a partial section along line I~-III o~ Figure 2 through the sliding members;
Figure 4 shows in a section similar to th~t of Fi~ure 1 : 25 a modified embodlment;
~ igure 5 ~ho~s a View of the embodi~ent ~ccordin~ to Fi~ure 4 in di~ection of the arrow V, notin~ that Figure 4 2~
shows a section along line ~ o~ Figure 5;
Figure 6 shows a section through a modified embodiment of an inventive sliding plate;
Figure 7 shows a vieW o~ the embodiment according to Figure 6 in direction o~ the arrow VII, noting that Figure 6 shows a section along line VI-~I o~ Fi~ure 7;
Figure 8 shows a section through a modi~ied embodiment o~ a sliding plate according to the in~ention; and Figure 9 shows a ~iew of the embodiment according to Figure 8 in direction of the arrow IX~ noting that Figure 8 shows a section along the line ~ V~II o~ Figure 9.
DETAILED DESCR~TION 0~ TH~ PREFERRED EMBODIMEN~S
In the embodiments according to Figures 1 to 3, there is mounted on a ribbed plate 1 a sliding chair 2, noting that there are arranged in two elongated recesses 3 of the sliding chair two self-lubricating, maintainance-free sliding members 4 and 5 of s~nthetic plastics ~aterial~ The recesses 3 have o~er a restricted a~ea an unoccupied portion 6 comprisin~
essentially ~ertical walls, ~hile the rece~ses 3 ha~e ovex the remaining circu~erençe inwa~dly protruding walls 7 Which en~age the side sur~ceS~8 o~ the slidin~ members 4 and 5 : o~er the major part of their circumference. In this case, the sliding members 4 and.5 ha~e a substantiall~ trapezoidal cross section aS is cleaxly shown in Figuxe 3~ noting that the angle between the base~ i.e~ the bottom surf~ce of the slidin~ members restin~ on the bottom o~ the receSs 3 and the inwardl~ extendin~ le~s, which for~ the side su~aces~
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essentially corresponds to the walls 7 o~ the recesses 3 which inwardly protrude in upward direction. This angle is designated by ~ in Figure 3 and is approximately 60 if the sliding members shall be driven in position in a simple manner and shall be reliably anchored within the recesses 3.
The maintainance-free, self-lubricating sliding members 4, 5 of synthetic plastics material are, in the embodiment shown, of di~erent len~th, noting that the length of the individual sliding members 4 , 5 is, considering the location of the unoccupied position 6, selected such that both sliding members 4 and 5 are, after having been driven into the recesses 3 and having been anchored therein, maintained in their position without additional fastening elements. For this purpose, the separating gap 10 between the individual sliding members 4 and 5, which separating gap extends in essentially transverse relation to the longitudinal direction 9 of the recess 3, is located immediately adjacent that end of the unoccupied position 6 which is designated by 1~, said ~: unoccupied position comprising the essentially verticallY
extendin~ walls. During assembling, the shorter sliding member designated by 5 is first inserted into the recesses, whereupon the longer sliding member 4 is introduced via the unoccupied position 6, said longer slidin~ member having a ~ low axial co~pxessibilit~ allowi~g, when dri~ing in the : 25 sliding.me~ber, enterin~ o~ the end 12 o~ the longer sliding ; members and facin~ the separatin~ ~p 10 into the area of the unoccupied position 6 and allowing this end 12, after a ~ -~o~
corresponding expansion in the inserted position, to become engaged over along a short area located in proximity of the end 11 o~ the unoccupied position 6 for the purpose of preventing a rising mo~ement.
The sliding portions 4 and S, respectively, extend intheir mounte.d ~osition.;ove~ the surface 13 of the sliding chair for a small amount being designated b~ h in ~igures 1 and 3.
Furthermore, grooves or splines 14 are provided in the upper side of the sliding members, said splines or grooves extend~
ing in the embodiment shown under an acute angle relative to the longitudinal axis 9 o~ the sliding members 4, 5 and, respectively, the recess 3 and ser~ing the purpose of removing dirt particles from the surface 15 of the slidin~
members 4 and 5. The sur~ace is thus protected against abradin~ influences.
In the embodiment according to the Figures 4 and 5, a sliding chaix 2 is agajin ~ounted on a ribbed plate ~, noting th.~t slidin~ menbers 4.~nd 5 of s~nthetic plastics ~aterial are again rece~ed ~thin elon~ated ~ecesses 3 o~ the slidin~
ch~ir, The slid-n~ ~e~bers are a~g~in ~aintained in positiQn yia the major nortiOn of th eir circum~e~.ence by inwardly p~otruding lateral edges ~X borders~ respecti.vel~, of the recesses 3 ,as is shown in ~i~uXe 3'~n an enl~x.~ed scale, po~ the pur,~se o,~
vbtaining a paxticularl~ S~ll conStructional hei~ht~ a stepped poxtion ~7 is p~o~ided ~n .the ~ase plate ~6 of the ribbed plate in the e.~bod~ent ~ccoxd~n~ to.the ~i~ureS 4 and 5s whereby~ as a wh:o.le, a low .constructional height is obtained~
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whereby, in particular, the use of an inner stock rail bracina becomes possible by using extremely low sliding chairs By the stepped portion 17 there is at least compensated an optionally re~uired increase oE the thickness of the cover plate o~ the sliding chair for reliably receiving the sliding members 4, 5 as well as the cotter 20 for ~ixing purposes, On account of the direct arrangement of the sliding members 4, 5 within recesses 3 of the sliding chair and on ~ccount of securing in position the sliding members by inwardly extending wall portions and profiles, respectively, engaging over or, respectively, engaging behind the sliding members, there results, as a whole, a very low constructional height, so that, as already mentioned, a laterally inward ~5 elastic mounting of the stock rail becomes possible, noting that two different possibilities are shown in the Figures 1 to 3 and, respectively, in the Figures 4 and 5.
In the Figures 6 and 7 there is designated by 18 a sliding plate, noting that there are held in position within elongated recesses 3 sliding members 4 and 5 by means of inwardly extending lateral walls of ~he recesses. The sliding plate 18 is, in this case, provided with ribs 19, noting that also sliding plates without such stop members can be used in a similar manner.
In Figures 8 and 9 there is shown a modified embodiment of a sliding plate 18 which can be utilized in particular for frog constructions comprising movable constructional parts.
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The frogs can be ~rogs comprising movable wing rails or Erogs compr;sing a movable frog tip, noting that the movable parts rest on the sliding members 4 and 5 with the use of a sliding cElair or without using a sliding chair.
The design of the side surfaces of the sliding members 4 and, respectively, 5 having a substantiallY trapezoidal cross section as well as the design of the inwardly extending side walls 7 of the recesses 3 is in all embodiments shown substantiaily analogous to the design shown in Figure 3.
For the purpose of removing the sliding members ~ and 5 from the recesses 3, there IS applied at the separating gap 10 a suitable tool and at first upwardly lifted by lever action the sliding member extending beyond the unoccupied position 6, which is then extracted, whereupon the second sliding member 5 can in a simple manner equally be removed from the recess.
Thus, there results the possibility to rapidly interchange the sliding members by means of extremely simple tools because forcibly introducing the sliding members can, for example, be effected by means of a hammer.
Particularly good sliding properties result by arranging two mutually parallel recesses within a ribbed plate or a sliding chair and, respectively, a sliding plate, noting that the longitudinal axis of the elongated recesses 3 extends, as a rule, in shifting direction of the shiftable switch component or crossing component, respectively.
The trapezoidal shape of the cross section of the sliding members shown in the Figures as well as the side walls of the 74~
recesses 3 extending in inward direction under a corresponding angle represents a very simple shape of the cxoss section which is particularly favourable for introducing and for extracting, respectively, the sliding members. In principle there can, however, also be provided other forms of the side walls of the recesses and thus for the side surfaces of the sliding members~which forms allow to reliably anchor the sliding members within the recesses by means of suitable profiles.
On account of the small height of the recesses 3 and on account o~ the direct insertion of the sliding members~ and 5, there can be provided such sliding members in all usual ribbed plates e~uin~ed with sliding chairs or in sliding plates or slidina sheets~iithout increasing in practice the total constructional height.
CROSSINGS
BACKGROUND ~F THæ I~VENq'ION
Field o'f''t~'e'I'nv'ention . _ The invention refers to a sliding chair, a sliding plate and ribb~d plate, respectively, for railway switches or railway crossings, comprising friction-reducing sliding membersof synthetic plastics material being releasably mounted within recesses of the sliding chair and the plates, respectively.
Description o~` th'e'P'ri'o'r Art . . ._ . . . _ In railway switches comprising a deflecting device, the tongue rails rest on sliding chairs and are shiftably supported thereon. In switch constructions having the frog itself swivelably mounted, there are known different constructions in which part of the frog is slidingly supported on a plate member or the whole ~ro~ is swivelably restin~ on sliding plates Swivelable constructional parts are also known in connection with railway crossings, noting that there must in all known constructions be provided for a suitable lubri-cation of the sliding support and, respectively, ease of swivelability on the slidinq plates, the sliding chair and the ribbed:plates, respectivel~, in a reliable ~anner. When lubricatin~ the slidin~.su~ports in usual manner, there result hi~h maintal~ance costs, bec~use the sliding suppo~tS must , . ~
. - ;. : ' `' :
.
;Z~ IL8~74 be supplied with lubricant in re~ular time intervals.
Lubricating oils addikionally suffer from the drawback of having varyiny lubricating properties under the influence of the weather conditions and that they completely loose there lub~icating properties in c~se o~f increased contami-nation. For this reaSon, there has already been proposed to utilize in place o~ lubricants sliding members of synthetic plastics material and reducin~ friction. From DE-OS 27 05 122 there has, for example, hecome known a rail~ay switch ~or railway vehicles and comprisin~ a deflecting device in which the ton~ue rails rest on sliding chairs, notin~ that friction--reducing sliding membexs of synthetic plastics material are provided between the parts sliding one upon the other. In this known construction, the sliding members of synthetic plastics material we~e pro~ided on the botto~ side of the tongue rails at least within the area of the sliding chairs.
Furthe~more, there h~e become known for slidin~ plates o~
railway switches coatin~s consist~ng of an or~anic material, notirl~ tha~t such s~nthetic plastics ~ate~ial shall have a suf~icient fle~ibilityr a su~lclent impact stren~th and a suf~icient abrasion re~ist~nce e~en at low te~per~tures.
Also such slidin~ membe~s o~ synthetic plastics ~aterial are subjected to ~ although reduced - wear and xe~uire maintainance work in re~ular ti~e lnter~als. Fcr the purpose o~ ~acilit~tin~
the maint~ina~nce work, the~e has already been pro~osed in the EP-~ 232 726 to mount within a frame, which is xe~ayabl~ locked within a Xecess of the sl~dln~ chair~ a ~lu~alit~ o~ slidin~
',:
.
Z0~ 7~
elements consistln~ o~ sel~-lubricating material. The self--lubricating material proposed for this construction was graphite-bronze being press~seated within the frame. A
construction utilizing graphite-bronze was - last not least -selected because ob~iously no type of sliding inserts wasfound which ha~e suff'icient stability and - in spite thereof -can rapidly and in a simple manner be replaced without the use of expensive tools or equipment.
SUMM~R~ O~ TH~ ~NVENTION
The invention now aims at providing a sliding chair and, reSpectively, a sliding plate or ribbed plate of the initially mentioned type, which is equipped with ~riction-reducing sliding members o~ synthetic plastics material and which simultaneously allows to reliably mount in position the sliding members thereby pro~iding a simple possibility to replace damaged slidin~ members. For solving this task, the construction according to the in~ention consists, in principle, in that at least two slidin~ ~e~bexs are accommodated in each receSs, the side surfaces of the sliding ~e~bers being - for the major part af the cixcumfexence of the sliding members - engaged over or, respecti~ely, behind by inwardly protruding walls or, respectivelyr profiles o~ the edge of the recess. On account of at least two slidln~ ~embers hein~ accommodated within each receS~ and being engaged o~er or, respectively, en~aged behind at thei~ s~de Sllr~aces over the major part of the circumference of the sliding ~embers by inwardl~ pxotruding walls or, respecti~ely, b~ profiles of the edge o~ the Xecess, .
:. ~
there is provided, on the one hand, a reliable seat of the sliding members on account of the inwardly protruding walls or, respectively, profiles and there is provided, on the other hand,.the ~ossibility to i~ter¢hanqe.the sli~ing members in a sim~le manner.
For this purpose, it is sufficient to lift and extract one of both sliding m~m~ers accommodated within the same recess, whereupon the other sliding member can by lateral shifting movement be equally shifted out of that area in which it is engaged over or engaged behind, respectively, by the inwardly protruding walls or pxofiles. It is thus sufficient to design a small portion of the circumference of the recess such that it does not engage over the side surfaces of the sliding members and thus provides the possibility to extract said both parts via that area in which the side surfaces are not engaged and on account of the side surfaces being engaged over or behind, respectively, by the walls of the recess over the major part of the circumference of the sliding members, a reliable locking effect is obtained in the inserted con-dition without additional measures, in particular without a separate auxiliary framec On accaunt of arranging the sliding members within the sliding chair, the sliding plate or the ribbed plate without interpositioning an auxiliary frame, there is obtained a small constructional height which is of particular ad~anta~e when using~ ~or example, a space-saving inner bracing o~ stock rails.
~ n this case ~nd in a particularly advantageous manner, the arrangement is such tha~ the recesses are o~ elon~ated D'7~
shape and that the separating gap between the sliding members introduced into the recess is arranged in transverse relation to the longer axis of the recess. On account of the recess having elon~ated shape, both sliding members to be driven into the recess can in a simple manner be forced into the recess in direction of its longitudinal axis, so that a great area of the circum~erence is reliably engaged over or, respectively, engaged behind by inwardl~ protruding walls or, respectivel~, profiles of the edge of the recess, noting that only a relatively short area need be designed as an unoccupied area allowing to lift and e~tract both sliding members.
The inoccupied area required for the lifting movement and extracting movement, respectively, can in a si.mple manner be obtained i~ the recess has an area comprising substantially vertical walls and having a width corres~onding`to the maximum width of the sliding members as measured in transverse relation to the direction o~ introducing the sliding membexs.
Sliding membexs havlng a do~e tail croSs section or a trapezoidal c~osS sectian can easily be intxoduced within the area of the essent.~all~ .~ertical walls~ noting that driving the members into the ~ea comprising the inwardl~ protruding walls or, res.pectivel~, pxo~iles c~n be ach~eved by means o~
some ~ew strokes in l~ngitudinal direction o~ the recess.
On account of the elas~ic~ty o~ the ~riction-reducing sliding members consistin~ o~ s~nthetic. plastics material~ the me~bers are, during the dri~ng~in o~eration~ si~ultaneously stron~ly prestressed ln direction to the bottom o~ the recess~ So that ' .
:, ~
7~
there is simultaneously obtained a reliable anchoring effect.
On account of both sliding members being forcibily introduced one after the otherl the second ~orcibly introduced sliding membex snaps in the ~inally stage and undex elastic prestress in direction to the bottom of the recess, so that there is reliably obtained a locking action against outward shifting movemen~ or stepping out of the sliding members.
A particularly simple arxangement results i~ the sliding members have a substantially trapezoidal croSs section and if the base angle o~ the legs of the trapeze corresponds to the base angle of the obli~uely extending and upwardly inwardly extending walls of the recess. Base angles of the legs o~ the trapeze, as measured ~rom the bottom of the recess~ have proved as particularly valuable if they are in the magnitude ~S of approximately 60, and such angles make sure that no con-siderable resistance is encountered when forcibly introducing the sliding me~bers and make also sure that the sliding members are reliably fixed in position within the recess.
After ha~ing forcibly introduced both siiding members, there remainS~ o~ course, between bo~h sliding members a separating gap which advantageously extends in transverse relation to the longer axiS o~ the recess ~or ~he purpose of pro~iding a good supporting ~orce against lateral outwa~d shi~tin~ mo.vement. The mutually oppoSing ~ont sur~aces o~
the slidin~ members at the area o~ the Separating gap thus ~or~ a xeliably support and counte~act in a reliable manner any unintended loosening o~ the sliding ~ember~ For reliabl~
, .
7~
preventing any upward mo~ement o~ the sliding members, the arran~ement is, in this case, preferably such that the separating gap between the sliding members within a recess is arranged within the area of the recess having substantially vertical walls or in proximity o this area. The distance of the separating gap from the unoccupied area as de~ined by the vertical walls must, of course, be selec.ted so small that the axial compression of the ~riction-reducin~ slidin~
members of synthetic plastics m~terial when forcibly introducing same with a corresponding tool, for exa~ple a hammer, is suf~icient to again el~stically expand the slidin~ member forcibly introduced as the second part - after having passed the unoccupiéd position - to such an extent that its ~ront sur~ace extends into an a~ea in which this second sliding 15 . mem.ber is already a~ain en~a~ed o~er by inwardly protrudin~
walls. In this manner~ th.ere iS obtained a particularl~ hi~h degree of sa~ety duxing the loçkin~ operation.
For the ~urpose o~ pxo~idiln~ the possibility to Xemove any contaminations ina~oidable in operation and,thus for the purpose of counter~cting any premature wear of the slidin~
elements~ the ~rxan~ement is a,dva,nta~eous.l~ suçh that the slidin~ members ha~e on .their sur~aice ~roQ.~eS e~tendin~ in lon~itudinal directi~n o~.the xeçesS or including an acute an~le with the longitud~na,l dlrection. B~ ar~anyin~ these ~rooves under a,n ~cute an~le to the lon~itudinal direction o~ the recess there results lateral strippin~ o~ deposited dirt p~rticles, i~ ~n~ ~o th~t.the sliding ~iction-reducing 8~
sur~ace is only little subjected to abrasion even in case of strong contamination. This ad~antaye is obtained in particular i~ the longitudinal axis of the recesses is oriented in shiftlng direction of the shi~table switch part, noting that in these cases - in particular on account of the separat-ing gap extending in essentially transverse relation and in an advantageous manner in essentially orthogonal relation to the longitudinal axi~ o~ the recess - shifting forces, if any, introduced into the slidin~ elements are ef~ectively supported within the area of the supporting gap without having as an ef~ect an upward ~o~ement of the sliding members.
A particularly hi~h de~ree of reduction of the friction and simultaneously a mini~um wear can be obtained if in each sliding chair and, respectively, in each sliding plate or ribbed plate there are pro~ided two recesses which are parallely arranged one relative to the other.
It is in particular ~hen using an inner bracing of stock rails that ~ small constxuctianal height must be intended~
When ~ixiny rails or s~itch parts in posit~on in such a manner, the ralls or sWitch parts are, aS a rule, braced by usin~
cotters ~ia leaf sprin~ elements, noting that the slidin~
chairs comprise correspondin~ xecesses for the cotteXS. If a thicker desi~n of the slidin~ chair plates beco~es necessaxy ~or reli~bl~ positioning the cotters, and this for accommodating the sliding members in the recesses en~a~ing over the sliding membexs, the arrange~ent is, for compensating this increa~ed constructlonal height, advanta~eously selected !
20.~9~7~
such that, for the purpose of reducing the constructional height in view of utilizing for positioning rails or switch parts lea~ spxing elements which can be braced by cotters, the ribbed plate or base plate below the sliding chair is stepped down to a smaller plate thickness. As a whole, thus there can be obtained a reduction of the total constructional height in spite o~ the sliding members outwardly protruding for a small amount as compared with known constructions.
BRIEF DESCRI~TION OF THE DRAWING
In the ~ollowing, the invention is explained with reference -to examples of embodiment schematically shown in the drawing, further advantages of the inventive construction becoming more clear by such embodiments.
In the dxawing Figure 1 shows ~ section through a first embodiment of an inventive ribbed plate co~prising a sliding chair having friction-reducing sliding mem~ers;
Figure 2 shows a tap plan view in direction of the axrow ~I~ of Fi~ure ~ onto the embodi~ent according to Figure1, noting that Fi~ure ~ shows a.section along line I-I a~
Figure 2;
~ igure 3 shows in an enlarged scale a partial section along line I~-III o~ Figure 2 through the sliding members;
Figure 4 shows in a section similar to th~t of Fi~ure 1 : 25 a modified embodlment;
~ igure 5 ~ho~s a View of the embodi~ent ~ccordin~ to Fi~ure 4 in di~ection of the arrow V, notin~ that Figure 4 2~
shows a section along line ~ o~ Figure 5;
Figure 6 shows a section through a modified embodiment of an inventive sliding plate;
Figure 7 shows a vieW o~ the embodiment according to Figure 6 in direction o~ the arrow VII, noting that Figure 6 shows a section along line VI-~I o~ Fi~ure 7;
Figure 8 shows a section through a modi~ied embodiment o~ a sliding plate according to the in~ention; and Figure 9 shows a ~iew of the embodiment according to Figure 8 in direction of the arrow IX~ noting that Figure 8 shows a section along the line ~ V~II o~ Figure 9.
DETAILED DESCR~TION 0~ TH~ PREFERRED EMBODIMEN~S
In the embodiments according to Figures 1 to 3, there is mounted on a ribbed plate 1 a sliding chair 2, noting that there are arranged in two elongated recesses 3 of the sliding chair two self-lubricating, maintainance-free sliding members 4 and 5 of s~nthetic plastics ~aterial~ The recesses 3 have o~er a restricted a~ea an unoccupied portion 6 comprisin~
essentially ~ertical walls, ~hile the rece~ses 3 ha~e ovex the remaining circu~erençe inwa~dly protruding walls 7 Which en~age the side sur~ceS~8 o~ the slidin~ members 4 and 5 : o~er the major part of their circumference. In this case, the sliding members 4 and.5 ha~e a substantiall~ trapezoidal cross section aS is cleaxly shown in Figuxe 3~ noting that the angle between the base~ i.e~ the bottom surf~ce of the slidin~ members restin~ on the bottom o~ the receSs 3 and the inwardl~ extendin~ le~s, which for~ the side su~aces~
.
- %O~ 7~
essentially corresponds to the walls 7 o~ the recesses 3 which inwardly protrude in upward direction. This angle is designated by ~ in Figure 3 and is approximately 60 if the sliding members shall be driven in position in a simple manner and shall be reliably anchored within the recesses 3.
The maintainance-free, self-lubricating sliding members 4, 5 of synthetic plastics material are, in the embodiment shown, of di~erent len~th, noting that the length of the individual sliding members 4 , 5 is, considering the location of the unoccupied position 6, selected such that both sliding members 4 and 5 are, after having been driven into the recesses 3 and having been anchored therein, maintained in their position without additional fastening elements. For this purpose, the separating gap 10 between the individual sliding members 4 and 5, which separating gap extends in essentially transverse relation to the longitudinal direction 9 of the recess 3, is located immediately adjacent that end of the unoccupied position 6 which is designated by 1~, said ~: unoccupied position comprising the essentially verticallY
extendin~ walls. During assembling, the shorter sliding member designated by 5 is first inserted into the recesses, whereupon the longer sliding member 4 is introduced via the unoccupied position 6, said longer slidin~ member having a ~ low axial co~pxessibilit~ allowi~g, when dri~ing in the : 25 sliding.me~ber, enterin~ o~ the end 12 o~ the longer sliding ; members and facin~ the separatin~ ~p 10 into the area of the unoccupied position 6 and allowing this end 12, after a ~ -~o~
corresponding expansion in the inserted position, to become engaged over along a short area located in proximity of the end 11 o~ the unoccupied position 6 for the purpose of preventing a rising mo~ement.
The sliding portions 4 and S, respectively, extend intheir mounte.d ~osition.;ove~ the surface 13 of the sliding chair for a small amount being designated b~ h in ~igures 1 and 3.
Furthermore, grooves or splines 14 are provided in the upper side of the sliding members, said splines or grooves extend~
ing in the embodiment shown under an acute angle relative to the longitudinal axis 9 o~ the sliding members 4, 5 and, respectively, the recess 3 and ser~ing the purpose of removing dirt particles from the surface 15 of the slidin~
members 4 and 5. The sur~ace is thus protected against abradin~ influences.
In the embodiment according to the Figures 4 and 5, a sliding chaix 2 is agajin ~ounted on a ribbed plate ~, noting th.~t slidin~ menbers 4.~nd 5 of s~nthetic plastics ~aterial are again rece~ed ~thin elon~ated ~ecesses 3 o~ the slidin~
ch~ir, The slid-n~ ~e~bers are a~g~in ~aintained in positiQn yia the major nortiOn of th eir circum~e~.ence by inwardly p~otruding lateral edges ~X borders~ respecti.vel~, of the recesses 3 ,as is shown in ~i~uXe 3'~n an enl~x.~ed scale, po~ the pur,~se o,~
vbtaining a paxticularl~ S~ll conStructional hei~ht~ a stepped poxtion ~7 is p~o~ided ~n .the ~ase plate ~6 of the ribbed plate in the e.~bod~ent ~ccoxd~n~ to.the ~i~ureS 4 and 5s whereby~ as a wh:o.le, a low .constructional height is obtained~
-., ~
2n~L~7~
whereby, in particular, the use of an inner stock rail bracina becomes possible by using extremely low sliding chairs By the stepped portion 17 there is at least compensated an optionally re~uired increase oE the thickness of the cover plate o~ the sliding chair for reliably receiving the sliding members 4, 5 as well as the cotter 20 for ~ixing purposes, On account of the direct arrangement of the sliding members 4, 5 within recesses 3 of the sliding chair and on ~ccount of securing in position the sliding members by inwardly extending wall portions and profiles, respectively, engaging over or, respectively, engaging behind the sliding members, there results, as a whole, a very low constructional height, so that, as already mentioned, a laterally inward ~5 elastic mounting of the stock rail becomes possible, noting that two different possibilities are shown in the Figures 1 to 3 and, respectively, in the Figures 4 and 5.
In the Figures 6 and 7 there is designated by 18 a sliding plate, noting that there are held in position within elongated recesses 3 sliding members 4 and 5 by means of inwardly extending lateral walls of ~he recesses. The sliding plate 18 is, in this case, provided with ribs 19, noting that also sliding plates without such stop members can be used in a similar manner.
In Figures 8 and 9 there is shown a modified embodiment of a sliding plate 18 which can be utilized in particular for frog constructions comprising movable constructional parts.
~o~
The frogs can be ~rogs comprising movable wing rails or Erogs compr;sing a movable frog tip, noting that the movable parts rest on the sliding members 4 and 5 with the use of a sliding cElair or without using a sliding chair.
The design of the side surfaces of the sliding members 4 and, respectively, 5 having a substantiallY trapezoidal cross section as well as the design of the inwardly extending side walls 7 of the recesses 3 is in all embodiments shown substantiaily analogous to the design shown in Figure 3.
For the purpose of removing the sliding members ~ and 5 from the recesses 3, there IS applied at the separating gap 10 a suitable tool and at first upwardly lifted by lever action the sliding member extending beyond the unoccupied position 6, which is then extracted, whereupon the second sliding member 5 can in a simple manner equally be removed from the recess.
Thus, there results the possibility to rapidly interchange the sliding members by means of extremely simple tools because forcibly introducing the sliding members can, for example, be effected by means of a hammer.
Particularly good sliding properties result by arranging two mutually parallel recesses within a ribbed plate or a sliding chair and, respectively, a sliding plate, noting that the longitudinal axis of the elongated recesses 3 extends, as a rule, in shifting direction of the shiftable switch component or crossing component, respectively.
The trapezoidal shape of the cross section of the sliding members shown in the Figures as well as the side walls of the 74~
recesses 3 extending in inward direction under a corresponding angle represents a very simple shape of the cxoss section which is particularly favourable for introducing and for extracting, respectively, the sliding members. In principle there can, however, also be provided other forms of the side walls of the recesses and thus for the side surfaces of the sliding members~which forms allow to reliably anchor the sliding members within the recesses by means of suitable profiles.
On account of the small height of the recesses 3 and on account o~ the direct insertion of the sliding members~ and 5, there can be provided such sliding members in all usual ribbed plates e~uin~ed with sliding chairs or in sliding plates or slidina sheets~iithout increasing in practice the total constructional height.
Claims (9)
1. Sliding chair (2), sliding plate (18) and ribbed plate (1), respectively, for railway switches or railway crossings, comprising friction-reducing sliding members (4, 5) of synthetic plastics material being releasably mounted within recesses (3) of the sliding chair and the plates, respectivly, characterized in that at least two sliding members (4, 5) are accommodated in each recess (3) the side surfaces of the sliding members (4, 5) being -for the major part of the circumference of the sliding members - engaged over or, respectively, engaged behind by inwardly protruding walls or, respectively, profiles (7) of the edge of the recess (3).
2. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in claim 1, characterized in that the recesses(3)have an elongated shape and in that the separating gap (10) between the sliding members (4, 5) placed into the recesses (3) is arranged in transverse relation to the longer axis of the recess(3).
3. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in claim 1 or 2, characterized in that the. recess (.3) has an area (6) comprising essentially vertical walls and having a free width corresponding to the greatest width of the sliding members (4, 5) as measured in transverse direction to the direction of insertion of the sliding members (4, 5).
4. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in claim 1, 2 or 3, characterized in that the sliding members (4, 5) have an essentially trapezoidal cross section and in that the base angle ( .alpha. ) of the legs of the trapeze corresponds to the associated base angle of the obliquely extending and upwardly inwardly protruding walls (7) of the recess (3).
5. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in any of the claims 1 to 4, characterized in that the separating gap (10) between the sliding members (4, 5) within a recess (3) is arranged within that area (6) of the recess (3) which has essentially vertical walls or is arranged in proximity of said area (6).
6. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in any of the claims 1 to 5, characterized in that the sliding members (4, 5) have on their upper side grooves (15) extending in longitudinal direction of the recess (3) or including an acute angle with the longitudinal direction.
7. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in any of the claims 1 to 6, characterized in that the longitudinal axis (9) of the recesses (3) is oriented in shifting direction of the shift-able switch component.
8. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in any of the claims 1 to 7, characterized in that two mutually parallely arranged recesses (3) are provided in each sliding chair (2) and, respectively, in each sliding plate 118) or ribbed plate (1).
9. Sliding chair, sliding plate and ribbed plate, respectively, as claimed in any of the claims 1 to 8, characterized in that the ribbed plate (1) or the base plate (16) is designed to have a smaller plate thickness below the sliding chair (2) for the purpose of reducing the con-structional height when utilizing for placing in position rails or switch components leaf spring elements which can be braced by cotters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1349/89A AT392497B (en) | 1989-06-02 | 1989-06-02 | SLIDING CHAIR, SLIDING PLATE OR RIB PLATE FOR SPREADING OR CROSSINGS |
| ATA1349/89 | 1989-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2018074A1 true CA2018074A1 (en) | 1990-12-02 |
Family
ID=3511970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002018074A Abandoned CA2018074A1 (en) | 1989-06-02 | 1990-06-01 | Sliding chair, sliding plate and ribbed plate, respectively, for railway switches of railway crossings |
Country Status (27)
| Country | Link |
|---|---|
| US (1) | US5125603A (en) |
| EP (1) | EP0401201B1 (en) |
| JP (1) | JPH0814081B2 (en) |
| KR (1) | KR950003620B1 (en) |
| CN (1) | CN1017533B (en) |
| AR (1) | AR245251A1 (en) |
| AT (2) | AT392497B (en) |
| AU (1) | AU633098B2 (en) |
| BG (1) | BG50615A3 (en) |
| BR (1) | BR9002606A (en) |
| CA (1) | CA2018074A1 (en) |
| CZ (1) | CZ280464B6 (en) |
| DD (1) | DD297475A5 (en) |
| DE (1) | DE59003291D1 (en) |
| DK (1) | DK0401201T3 (en) |
| ES (1) | ES2047311T3 (en) |
| FI (1) | FI93887C (en) |
| HR (1) | HRP921295A2 (en) |
| HU (1) | HUT56896A (en) |
| LT (1) | LT3362B (en) |
| LV (1) | LV5307A3 (en) |
| NO (1) | NO176677C (en) |
| PL (1) | PL163127B1 (en) |
| PT (1) | PT94192A (en) |
| RU (1) | RU1830097C (en) |
| TN (1) | TNSN90073A1 (en) |
| YU (1) | YU106990A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT397673B (en) * | 1992-05-18 | 1994-06-27 | Voest Alpine Eisenbahnsysteme | DEVICE FOR DETERMINING SLIDING INSERTS |
| FR2698642B1 (en) * | 1992-11-27 | 1995-02-17 | Sncf | Device for mounting a needle and a counter-needle on a cross member. |
| NL1033566C2 (en) * | 2007-03-20 | 2008-09-23 | Grontmij Nederland B V | Railway system, as well as method for constructing a rail system and method for adapting a rail system. |
| WO2013117325A1 (en) | 2012-02-06 | 2013-08-15 | Voestalpine Bwg Gmbh & Co. Kg | Track section for a rail and method for increasing the elastic bedding |
| DE102012100957A1 (en) | 2012-02-06 | 2013-08-08 | Voestalpine Bwg Gmbh & Co. Kg | Track portion for rail vehicle, has elastic element partially extended in recesses of supporting part and/or foot portion of core and exhibiting thickness and elasticity such that distance is unchanged when core is unstressed |
| DE102012100947A1 (en) | 2012-02-06 | 2013-08-08 | Voestalpine Bwg Gmbh & Co. Kg | Track portion for rail, has resilient element having spring characteristic, where resilient element extends itself in recess of foot portion, and resilient element has thickness and rigidity such that gap with core is unchanged |
| CN103132400B (en) * | 2013-03-20 | 2015-01-07 | 中国铁建重工集团有限公司 | Sliding device for turnout railroad switch |
| CN104674610A (en) * | 2013-11-28 | 2015-06-03 | 中铁宝桥集团有限公司 | Self-lubricating slide plate and manufacturing method thereof |
| DE102018007887A1 (en) * | 2018-10-05 | 2020-04-09 | Deutsche Bahn Ag | Device for changing the tongue rail of a rail switch |
| CN109183526A (en) * | 2018-11-12 | 2019-01-11 | 中铁宝桥集团有限公司 | A kind of self-lubricating antifriction slide plate |
| CN114717886A (en) * | 2022-03-18 | 2022-07-08 | 中国国家铁路集团有限公司 | Wing rail embedded type alloy steel combined frog and method for replacing quick-wear parts on line |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US752517A (en) * | 1904-02-16 | Slide-plate for railway-switches | ||
| US3913328A (en) * | 1974-07-10 | 1975-10-21 | Westinghouse Air Brake Co | Oil leakage recycler |
| JPS526084U (en) * | 1975-06-27 | 1977-01-17 | ||
| JPS5414787Y2 (en) * | 1975-06-30 | 1979-06-16 | ||
| US4131255A (en) * | 1976-02-09 | 1978-12-26 | Heinz Faigle | Rail switch arrangement |
| FR2340403A1 (en) * | 1976-02-09 | 1977-09-02 | Faigle Heinz | TRACK EQUIPMENT FOR RAIL VEHICLES |
| JPS52140507U (en) * | 1976-04-20 | 1977-10-25 | ||
| LU75283A1 (en) * | 1976-07-01 | 1978-02-08 | ||
| DE2631594C2 (en) * | 1976-07-14 | 1978-09-28 | Wilfried 7031 Nufringen Ensinger | Plastic sliding surface for rail switches |
| EP0000633B1 (en) | 1977-07-23 | 1981-11-04 | Beecham Group Plc | Process for the preparation of alpha-substituted-thien-3-ylacetic acid and derivatives thereof |
| FR2398841A1 (en) * | 1977-07-27 | 1979-02-23 | Stecma | Rubber pad for supporting railway track points - is covered pref. with PTFE to eliminate frequent greasing of plain metal pads |
| DE2850088A1 (en) * | 1978-11-18 | 1980-05-22 | Wilfried Ensinger | PLASTIC SLIDING COVER FOR RAILS |
| DE2856850C2 (en) * | 1978-12-30 | 1983-10-27 | Thyssen Industrie Ag, 4300 Essen | Switch with switch tongues that slide on sliding chairs |
| FR2501253A1 (en) * | 1981-03-03 | 1982-09-10 | Lafarge Refractaires | SLIDING CUSHION AND ITS USE IN A RAILWAY HANDLING SYSTEM |
| DE3406726A1 (en) * | 1984-02-24 | 1985-08-29 | Wilfried 7031 Nufringen Ensinger | Plastic slide plate for a rail switch |
| CH669231A5 (en) * | 1986-01-14 | 1989-02-28 | Magna Holding Anstalt | SLIDING CHAIR FOR SWITCHES AND CROSSINGS. |
| JPH0421841Y2 (en) * | 1987-01-22 | 1992-05-19 | ||
| GB2202563B (en) * | 1987-03-19 | 1991-08-21 | British Railways Board | A railway switch |
-
1989
- 1989-06-02 AT AT1349/89A patent/AT392497B/en not_active IP Right Cessation
-
1990
- 1990-05-23 AR AR90316919A patent/AR245251A1/en active
- 1990-05-29 CZ CS902621A patent/CZ280464B6/en unknown
- 1990-05-30 EP EP90890167A patent/EP0401201B1/en not_active Expired - Lifetime
- 1990-05-30 DE DE90890167T patent/DE59003291D1/en not_active Expired - Fee Related
- 1990-05-30 PT PT94192A patent/PT94192A/en not_active Application Discontinuation
- 1990-05-30 AT AT90890167T patent/ATE96867T1/en not_active IP Right Cessation
- 1990-05-30 DK DK90890167.1T patent/DK0401201T3/en not_active Application Discontinuation
- 1990-05-30 TN TNTNSN90073A patent/TNSN90073A1/en unknown
- 1990-05-30 US US07/530,593 patent/US5125603A/en not_active Expired - Fee Related
- 1990-05-30 ES ES90890167T patent/ES2047311T3/en not_active Expired - Lifetime
- 1990-05-31 YU YU106990A patent/YU106990A/en unknown
- 1990-05-31 NO NO902425A patent/NO176677C/en unknown
- 1990-06-01 BR BR909002606A patent/BR9002606A/en not_active Application Discontinuation
- 1990-06-01 DD DD90341257A patent/DD297475A5/en not_active IP Right Cessation
- 1990-06-01 FI FI902741A patent/FI93887C/en not_active IP Right Cessation
- 1990-06-01 PL PL90285431A patent/PL163127B1/en unknown
- 1990-06-01 JP JP2144256A patent/JPH0814081B2/en not_active Expired - Lifetime
- 1990-06-01 RU SU904830156A patent/RU1830097C/en active
- 1990-06-01 KR KR1019900008090A patent/KR950003620B1/en not_active IP Right Cessation
- 1990-06-01 BG BG092123A patent/BG50615A3/en unknown
- 1990-06-01 AU AU56196/90A patent/AU633098B2/en not_active Ceased
- 1990-06-01 CN CN90104296A patent/CN1017533B/en not_active Expired
- 1990-06-01 HU HU903296A patent/HUT56896A/en unknown
- 1990-06-01 CA CA002018074A patent/CA2018074A1/en not_active Abandoned
-
1992
- 1992-11-17 HR HR921295A patent/HRP921295A2/en not_active Application Discontinuation
- 1992-12-30 LV LV920627A patent/LV5307A3/en unknown
-
1993
- 1993-07-22 LT LTIP806A patent/LT3362B/en not_active IP Right Cessation
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| FZDE | Discontinued |